Powering up the National Grid - Naked Scientists 14.05.13

This week we look at how our power grids are going to be transformed. From technology which hopes to reduce our energy prices to new ways to include wind and solar power in the grid. Plus, in the news, what Google have up their sleeve for their next smartphone, the proposed takeover of the UK pharmaceutical giant AstraZeneca, and why AM radio could be sending birds off course...